bump: bump oras-go to the main branch

[wangxiaoxuan273]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes #

Please check the following list:

• [ ] Does the affected code have corresponding tests, e.g. unit test, E2E test?
• [ ] Does this change require a documentation update?
• [ ] Does this introduce breaking changes that would require an announcement or bumping the major version?
• [ ] Do all new files have an appropriate license header?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.70%. Comparing base (23e243b) to head (fdd4cec).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1360 +/- ## ======================================= Coverage 84.70% 84.70% ======================================= Files 104 104 Lines 3687 3687 ======================================= Hits 3123 3123 Misses 336 336 Partials 228 228 ```

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